'House of Judah' in the Bible

And the men of Judah came, and there they anointed David king over the house of Judah. And they told David, saying, The men of Jabesh-gilead were they that buried Saul.

Therefore now let your hands be strengthened, and be you valiant: for your master Saul is dead, and also the house of Judah has anointed me king over them.

Ish-bosheth Saul's son was forty years old when he began to reign over Israel, and reigned two years. But the house of Judah followed David.

And the time that David was king in Hebron over the house of Judah was seven years and six months.